نتایج جستجو برای: detector

تعداد نتایج: 58684  

Journal: :Nature Nanotechnology 2007

Journal: :Lecture Notes in Physics 2022

Abstract The information needed when analysing data, for example, the cross-section measurements, is 4-momentum vectors of particles in interest, and possibly knowledge about species particles. For this purpose, detector high energy physics usually designed so that it allows us to measure momentum or energy, particle identification, such as velocity. However, recorded data they are do not tell ...

2008

COMMERCIAL VISION SYSTEMS In the last few years thermal imaging has found its way into many more commercial applications. Most of these applications require a low cost product with an uncooled detector. These sensors image in the LWIR, or longwave infrared band (7 14 μm). Different types of uncooled detectors are available on the market. Since the infrared detector is the heart of any thermal i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده برق و کامپیوتر 1392

آلتراسوند یکی از روش های تصویربرداری است که هیج ضرری برای بدن ندارد، بنابرین نسبت به سایر دستگاه های پزشکی از محبوبیت و کاربرد بیشتری برخوردار است. طراحی بورد front-end یکی از چالشهای بزرگ در طراحی دستگاه سونوگرافی است که در آن سیگنالهای مدوله شده از بدن با دامنه بسیار کم باز می گردند که می توانند در رنج فرکانسی 2 تا 12 مگاهرتز کار کنند. تکنولوژی روز سعی در کوچک کردن مدارهای الکترونیکی و کمینه ...

Journal: :Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 2013

Journal: :iranian journal of radiation research 0
h.r. vega-carrillo unidad académica de estudios nucleares, universidad autonoma de zacatecas, zacatecas, zac. méxico r. barquero departamento de radiología del hospital universitario rio hortega, valladolid, spain g.a. mercado unidad academica de matematicas universidad autónoma de zacatecas, zacatecas, zac. méxico

background: in high-intensity, mixed and pulsed neutron fields the use of spectrometers or area monitors with active detectors is useless in these conditions neutron measuring devices must have a passive detector. here a passive neutron area monitor with cr39 track detector was designed and the response was calculated. materials and methods: the response of a passive neutron area monitor with c...

2006
Nikom Suvonvorn Bertrand Zavidovique

This paper describes an efficient approach for the detection of level-line junctions in images. Potential junctions are exhibited independent from noise by their consistent local level-variation. Then, level-lines are tracked through junctions in descending the level-line flow. Flow junctions are extracted as image primitives to support matching in many applications. The primitive is robust aga...

Journal: :IEEE Transactions on Nuclear Science 2004

and A. Sheikhi, M. Farzan Sabahi, M. Modarres Hashemi,

In this paper, radar detection based on Monte Carlo sampling is studied. Two detectors based on Importance Sampling are presented. In these detectors, called Particle Detector, the approximated likelihood ratio is calculated by Monte Carlo sampling. In the first detector, the unknown parameters are first estimated and are substituted in the likelihood ratio (like &#10the GLRT method). In the s...

تابان, محمد رضا, حاجی ملاحسینی, حبیب الله, قبادزاده, علی,

In radar detection, the existence of the clutter edge in the reference samples considerably degrades the performance of the detector. Hence, clutter edge estimation not only improves the CFAR detectors, but also can be used for partitioning the various areas of the clutter in the clutter map. In this paper, we propose an adaptive algorithm for detecting the clutter edge between two Weibull clut...

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